{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "b82eedfe",
   "metadata": {},
   "source": [
    "------\n",
    "* 2022-10-11 week 08\n",
    "* python课堂笔记\n",
    "* 记录人:梁颖\n",
    "------"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "35c19066",
   "metadata": {},
   "source": [
    "# 本周内容\n",
    "> 0. 代码的注释\n",
    "> 1. 用户输入\n",
    "> 2. 格式化输出"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "48d78083",
   "metadata": {},
   "source": [
    "## 0. 代码的注释\n",
    "> 1. #- 一般写在代码块的最上边，或者每一行代码的最后，用于代码思路的记录。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "e4544597",
   "metadata": {},
   "outputs": [],
   "source": [
    " # Author:Liangying"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "cfadc837",
   "metadata": {},
   "source": [
    "> 2. ‘’‘注释内容’‘’，一般是注释代码块"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "3a73fa6a",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "三个引号注释代码块内容，不运行\n"
     ]
    }
   ],
   "source": [
    "'''\n",
    "2 import random\n",
    "3 wait_time = random.randint(1,60)\n",
    "4 print(wait_time)\n",
    "5 \n",
    "6 word = \"bottles\"\n",
    "7 print(word)\n",
    "8 '''\n",
    "print(\"三个引号注释代码块内容，不运行\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b5b64721",
   "metadata": {},
   "source": [
    "## 1. 用户输入\n",
    "> 1. input( )"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "12dbee15",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "账号:Liangying\n",
      "密码:123456\n",
      "Liangying\n",
      "123456\n"
     ]
    }
   ],
   "source": [
    "# 登陆系统\n",
    "username = input(\"账号:\")\n",
    "password = input(\"密码:\")\n",
    "\n",
    "print(username)\n",
    "print(password)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "824feaba",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "账号:admin\n",
      "密码:123456\n",
      "欢迎admin登陆！\n"
     ]
    }
   ],
   "source": [
    "# 登陆系统 完善\n",
    "# 假设我们数据库有用户信息： 账号： admin， 密码：123456\n",
    "user1 = \"admin\"\n",
    "password1 = \"123456\"\n",
    "\n",
    "username = input(\"账号:\")\n",
    "password = input(\"密码:\")\n",
    "\n",
    "# 情景一： 输入信息正确，登陆成功\n",
    "if user1 == username and password1 == password:\n",
    "    print(\"欢迎\"+user1+\"登陆！\")\n",
    "# 情景二： 账号不存在或密码不正确\n",
    "else:\n",
    "    print(\"账号不存在或密码不正确\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "690a67e4",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 登陆系统 迭代1 : 增加判断功能\n",
    "# 假设我们数据库有用户信息： 账号： admin， 密码：123456\n",
    "user1 = \"admin\"\n",
    "password1 = \"123456\"\n",
    "\n",
    "username = input(\"账号:\")\n",
    "password = input(\"密码:\")\n",
    "\n",
    "# 情景一： 输入信息正确，登陆成功\n",
    "if user1 == username and password1 == password:\n",
    "    print(\"欢迎\"+user1+\"登陆！\")\n",
    "# 情景二： 账号不存在或密码不正确\n",
    "else:\n",
    "    print(\"账号不存在或密码不正确\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "b482a16d",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 登陆系统 迭代2 : 增加循环功能\n",
    "# 假设我们数据库有用户信息： 账号： admin， 密码：123456\n",
    "user1 = \"admin\"\n",
    "password1 = \"123456\"\n",
    "\n",
    "for i in range(3,0,-1): # i 是一个 int \n",
    "    username = input(\"账号:\")\n",
    "    password = input(\"密码:\")\n",
    "    \n",
    "    # 情景一： 输入信息正确，登陆成功\n",
    "    if user1 == username and password1 == password:\n",
    "        print(\"欢迎\"+user1+\"登陆！\")\n",
    "        break # 终止循环\n",
    "    # 情景二： 账号不存在或密码不正确\n",
    "    else:\n",
    "        if i == 1:\n",
    "            print(\"三次输入失败，请1小时后再来尝试\")\n",
    "        else:\n",
    "            print(\"账号不存在或密码不正确\")\n",
    "            print(\"您还有\"+str(i-1)+\"次尝试的机会\") # str 强制将int转换成str"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bef7a51b",
   "metadata": {},
   "source": [
    "## 2. 格式化输出\n",
    "> 1. 字符串拼接\n",
    "> 2. 占位符\n",
    "> 3. format()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c407c76f",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 用户注册系统 方法一：字符串拼接\n",
    "name = input(\"姓名：\")\n",
    "age = input(\"年龄：\")\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF '''+ name +'''-----'''+'''\n",
    "年龄：'''+ age +'''\n",
    "工作：'''+ job +'''\n",
    "收入：'''+ salary +'''\n",
    "地区：'''+ reg\n",
    "\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f5c0ce0a",
   "metadata": {},
   "outputs": [],
   "source": [
    "helppinput用户输入，其都以字符串形式返回\n",
    "age = input(\"年龄：\")\n",
    "print(age,type(age))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9c5c2e5f",
   "metadata": {},
   "outputs": [],
   "source": [
    "# 用户注册系统 方法二：占位符 %s str,依次有序输入\n",
    "name = input(\"姓名：\")\n",
    "age = int(input(\"年龄：\")) # 强制将 str 转换为 int\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF %s-----\n",
    "年龄: %d\n",
    "工作: %s \n",
    "收入: %s\n",
    "地区: %s'''%(name,age,job,salary,reg)\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "232ef315",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "姓名：易太太\n",
      "年龄：18\n",
      "工作：学生\n",
      "收入：无\n",
      "地区：广州\n",
      "-----INFO OF 易太太-----\n",
      "姓名: 易太太\n",
      "年龄: 18\n",
      "工作: 学生 \n",
      "收入: 无\n",
      "地区: 广州\n"
     ]
    }
   ],
   "source": [
    "# 用户注册系统 方法三： format() 格式化输出函数，参数传递，不需要考虑位置\n",
    "name = input(\"姓名：\")\n",
    "age = int(input(\"年龄：\")) # 强制将 str 转换为 int\n",
    "job = input(\"工作：\")\n",
    "salary = input(\"收入：\")\n",
    "reg = input(\"地区：\")\n",
    "\n",
    "info = '''-----INFO OF {姓名}-----\n",
    "姓名: {姓名}\n",
    "年龄: {年龄}\n",
    "工作: {工作} \n",
    "收入: {收入}\n",
    "地区: {地区}'''.format(年龄 = age,姓名 = name,工作 = job,收入 = salary,地区 = reg)\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "46c36a20",
   "metadata": {},
   "source": [
    "## 课后练习\n",
    "### 购物车程序项目：\n",
    "\n",
    "* 要求：\n",
    "> 1.运行程序后，让用户输入支付宝余额，然后打印我们的商品列表给用户。  \n",
    "> 2.让用户输入商品编号进行商品的购买。  \n",
    "> 3.用户选择商品后，检查用户的余额是否够，若够则直接扣款，不够则提醒用户。  \n",
    "> 4.用户可以随时退出购买，推出时打印用户已购买的商品和支付宝余额。\n",
    "\n",
    " "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "c44fabda",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "用户名：易太太\n",
      "支付宝余额：100000\n",
      "商品编号：123456\n",
      "-----INFO OF 易太太-----\n",
      "用户名: 易太太\n",
      "支付宝余额: 100000\n",
      "商品编号: 123456\n"
     ]
    }
   ],
   "source": [
    "name = input(\"用户名：\")\n",
    "balance = input(\"支付宝余额：\")\n",
    "number = input(\"商品编号：\")\n",
    "if i \n",
    "\n",
    "info = '''-----INFO OF {用户名}-----\n",
    "用户名: {用户名}\n",
    "支付宝余额: {支付宝余额}\n",
    "商品编号: {商品编号}'''.format(用户名 = name,支付宝余额 = balance,商品编号 = number)\n",
    "print(info)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
<<<<<<< HEAD
   "id": "90b45909",
=======
   "id": "ca5e644b",
>>>>>>> 10207e8fa479136a7717bc409093c4a103e75189
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.12"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}
